OK for trunk :)
On Mon, Sep 1, 2025 at 12:06 PM Jiawei <jia...@iscas.ac.cn> wrote:
>
> This patch update RISC-V Zba extension 'shNadd.uw' instruction generation.
> Supplemented the instruction generation detection of 'sh1add.uw' and
> 'sh3add.uw'.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/riscv/zba-shadd.c: New test functions.
>
> ---
> gcc/testsuite/gcc.target/riscv/zba-shadd.c | 20 +++++++++++++++++++-
> 1 file changed, 19 insertions(+), 1 deletion(-)
>
> diff --git a/gcc/testsuite/gcc.target/riscv/zba-shadd.c
> b/gcc/testsuite/gcc.target/riscv/zba-shadd.c
> index 61305d3a357..445ffb29474 100644
> --- a/gcc/testsuite/gcc.target/riscv/zba-shadd.c
> +++ b/gcc/testsuite/gcc.target/riscv/zba-shadd.c
> @@ -1,7 +1,15 @@
> /* { dg-do compile } */
> /* { dg-options "-O2 -march=rv64gc_zba -mabi=lp64" } */
>
> -unsigned long foo(unsigned int a, unsigned long b)
> +unsigned long foo1(unsigned int a, unsigned long b)
> +{
> + a = a << 1;
> + unsigned long c = (unsigned long) a;
> + unsigned long d = b + (c<<1);
> + return d;
> +}
> +
> +unsigned long foo2(unsigned int a, unsigned long b)
> {
> a = a << 1;
> unsigned long c = (unsigned long) a;
> @@ -9,5 +17,15 @@ unsigned long foo(unsigned int a, unsigned long b)
> return d;
> }
>
> +unsigned long foo3(unsigned int a, unsigned long b)
> +{
> + a = a << 1;
> + unsigned long c = (unsigned long) a;
> + unsigned long d = b + (c<<3);
> + return d;
> +}
> +
> +/* { dg-final { scan-assembler "sh1add.uw" } } */
> /* { dg-final { scan-assembler "sh2add.uw" } } */
> +/* { dg-final { scan-assembler "sh3add.uw" } } */
> /* { dg-final { scan-assembler-not {\mzext} } } */
> --
> 2.43.0
>
